What is Thumb Basal Joint Arthritis?

This refers to the degeneration of articular cartilage in the carpometacarpal (CMC) joint of the thumb, also known as the basal joint.

What are the usual causes?

- Aging, as it results in wear and tear over time

- Previous injury or trauma to the thumb joint

- Conditions like osteoarthritis or rheumatoid arthritis

What are common symptoms?

- Persistent pain in the thumb, especially during activities involving gripping or pinching

- Swelling, stiffness, or tenderness at the base of the thumb

- Loss or decrease in thumb strength

How is it identified?

- Physical examination, assessing pain, tenderness and range of motion

- Radiographic evaluation (X-rays) to confirm the diagnosis and determine disease severity

What is the preferential treatment approach?

- Initial conservative management involves use of NSAIDs, thumb splints, and corticosteroid injections

- Surgical intervention may be considered if non-surgical options fail. Two common treaments are denervation or trapeziectomy.